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Model releaseComputeFrontierUSConfirmed

Meta releases Muse Spark Open, 816-billion-parameter multimodal model

See how this story connects

Source: Hugging Face

Meta released Muse Spark Open, an open-weight multimodal mixture-of-experts model with approximately 816 billion total parameters and 42 billion active per token. The model processes text, images, audio and video with a context window of up to one million tokens. Meta trained Muse Spark Open for agentic coding tasks including reading codebases, writing and debugging code, and calling tools.

Why it matters

Developers can use a single model interface to process multiple input types and perform complex coding tasks with long context windows and tool integration capabilities.

When
15 Oct 2026
ID
WTA-N-2026-0304
Who
Meta

Summary by wheresthe.ai, from Hugging Face. Checked against the source on 15 Oct 2026.

Read the original at Hugging Face

Source copy: download the page as saved on 18 Oct 2026 (PDF). Also held by the Internet Archive.

Earlier in this Storyline: What led hereMeta releases Muse Wonder and Muse Wonder Full, its most capable models, for agent tasks

Cite this story

WTA-N-2026-0304: “Meta releases Muse Spark Open, 816-billion-parameter multimodal model.” wheresthe.ai, 15 Oct 2026. https://wheresthe.ai/d/us-meta-releases-muse-spark-open-816-billion-parameter-multi-2026-10/ (source: Hugging Face).

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